One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,4)(5,9)(6,7)(8,10)(11,12)(13,14)(15,16)(17,18)(19,21)(20,28)(22,25)(23,27)(24,29)(26,32)(30,31)(34,36)(35,41)(40,44)(43,45) involution — undirected(1,2)(3,10)(4,8)(5,9)(6,7)(11,14)(12,13)(15,16)(17,19)(18,23)(20,26)(21,25)(22,27)(24,32)(28,30)(29,31)(33,34,38,36)(35,42,41,39)(37,40,46,44)(43,48,45,47)(2,7)(3,8)(9,16)(11,13)(20,29)(24,28)(26,31)(30,32)(33,34,38,36)(35,42,41,39)(37,40,46,44)(43,48,45,47)(1,3,6,8)(2,4,7,10)(5,13,15,11)(9,14,16,12)(17,20,22,29)(18,24,25,28)(19,26,27,31)(21,30,23,32)(33,35,38,41)(34,39,36,42)(37,45,46,43)(40,48,44,47)(1,4)(2,8)(3,7)(5,14)(6,10)(9,11)(12,15)(13,16)(17,21,22,23)(18,19,25,27)(20,30,29,32)(24,26,28,31)(33,36,38,34)(35,42,41,39)(37,40,46,44)(43,47,45,48)(1,5,6,15)(2,9,7,16)(3,11,8,13)(4,12,10,14)(17,19)(18,21)(20,31)(22,27)(23,25)(24,32)(26,29)(28,30)(33,37,38,46)(34,40,36,44)(35,43,41,45)(39,47,42,48)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.